java.lang.NullPointerException
at ic2.core.EnergyNet.addTileEntity(EnergyNet.java:213)
at ic2.core.EnergyNet$EventHandler.onEnergyTileLoad(EnergyNet.java:53)
at net.minecraftforge.event.ASMEventHandler_18_EventHandler_onEnergyTileLoad_EnergyTileLoadEvent.invoke(.dynamic)
at net.minecraftforge.event.ASMEventHandler.invoke(ASMEventHandler.java:39)
at net.minecraftforge.event.EventBus.post(EventBus.java:111)
at ic2.core.block.machine.tileentity.TileEntityElectricMachine.onLoaded(TileEntityElectricMachine.java:88)
at ic2.core.block.machine.tileentity.TileEntityStandardMachine.onLoaded(TileEntityStandardMachine.java:105)
at ic2.core.block.TileEntityBlock$1.tickCallback(TileEntityBlock.java:48)
at ic2.core.IC2.processTickCallbacks(IC2.java:1366)
at ic2.core.IC2.tickStart(IC2.java:1225)
at cpw.mods.fml.common.SingleIntervalHandler.tickStart(SingleIntervalHandler.java:28)
at cpw.mods.fml.common.FMLCommonHandler.tickStart(FMLCommonHandler.java:122)
at cpw.mods.fml.common.FMLCommonHandler.onPreWorldTick(FMLCommonHandler.java:295)
at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:822)
at net.minecraft.server.dedicated.DedicatedServer.func_71190_q(DedicatedServer.java:320)
at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:732)
at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:614)
at net.minecraft.server.ThreadMinecraftServer.run(SourceFile:573)

java.lang.NullPointerException
at ic2.core.EnergyNet.addTileEntity(EnergyNet.java:213)
at ic2.core.EnergyNet$EventHandler.onEnergyTileLoad(EnergyNet.java:53)
at net.minecraftforge.event.ASMEventHandler_18_EventHandler_onEnergyTileLoad_EnergyTileLoadEvent.invoke(.dynamic)
at net.minecraftforge.event.ASMEventHandler.invoke(ASMEventHandler.java:39)
at net.minecraftforge.event.EventBus.post(EventBus.java:111)
at ic2.core.block.machine.tileentity.TileEntityElectricMachine.onLoaded(TileEntityElectricMachine.java:88)
at ic2.core.block.machine.tileentity.TileEntityStandardMachine.onLoaded(TileEntityStandardMachine.java:105)
at ic2.core.block.TileEntityBlock$1.tickCallback(TileEntityBlock.java:48)
at ic2.core.IC2.processTickCallbacks(IC2.java:1366)
at ic2.core.IC2.tickStart(IC2.java:1225)
at cpw.mods.fml.common.SingleIntervalHandler.tickStart(SingleIntervalHandler.java:28)
at cpw.mods.fml.common.FMLCommonHandler.tickStart(FMLCommonHandler.java:122)
at cpw.mods.fml.common.FMLCommonHandler.onPreWorldTick(FMLCommonHandler.java:295)
at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:822)
at net.minecraft.server.dedicated.DedicatedServer.func_71190_q(DedicatedServer.java:320)
at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:732)
at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:614)
at net.minecraft.server.ThreadMinecraftServer.run(SourceFile:573)

java.lang.NoSuchFieldError: enabled
at net.minecraft.client.renderer.RenderGlobal.func_72713_a(RenderGlobal.java:530)
at net.minecraft.client.renderer.EntityRenderer.func_78471_a(EntityRenderer.java:1505)
at net.minecraft.client.renderer.EntityRenderer.func_78480_b(EntityRenderer.java:1115)
at net.minecraft.client.Minecraft.func_71411_J(Minecraft.java:934)
at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:826)
at net.minecraft.client.main.Main.main(SourceFile:101)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at net.minecraft.launchwrapper.Launch.launch(Launch.java:131)
at net.minecraft.launchwrapper.Launch.main(Launch.java:27)

A detailed walkthrough of the error, its code path and all known details is as follows:
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-- Head --
Stacktrace:
at net.minecraft.client.renderer.RenderGlobal.func_72713_a(RenderGlobal.java:530)
at net.minecraft.client.renderer.EntityRenderer.func_78471_a(EntityRenderer.java:1505)